| 年度 | 实际值 |
|---|---|
| 1992 | 63.66 |
| 1993 | 64.99 |
| 1994 | 66.2 |
| 1995 | 68.09 |
| 1996 | 69.94 |
| 1997 | 70.62 |
| 1998 | 72.19 |
| 1999 | 73.52 |
| 2000 | 74.71 |
| 2001 | 75.77 |
| 2002 | 77.46 |
| 2003 | 78.8 |
| 2004 | 80.22 |
| 2005 | 81.43 |
| 2006 | 82.13 |
| 2007 | 82.76 |
| 2008 | 83.14 |
| 2009 | |
| 2010 | 83.28 |
| 2011 | 83.8 |
| 2012 | 83.6 |
| 2013 | 84.2 |
| 2014 | 85.2 |
| 2015 | 85.78 |
| 2016 | 110 |
| 2017 | 111 |
| 2018 | 113 |